Polyurethane foam in 1937: Otto Bayer 뿯½ Otto Bayer
Climate GWP problem replaced ozone problem. Keep Polyurethane foam with “Otto Bayer” and 0 from 1937. Insulation combustibility became a public brief — chemistry and system both.
This atlas treats Polyurethane foam as a system: mill route, coatings, tests and the cavity it sits in. Conductivity note: λ ~0.022–0.028 W/m·K (aged PIR boards, bands). Insulation score 88/100 is relative to 32 entries — metals lose, VIPs and aerogels win. Fire letter in editorial use: typically E–B with facers; not A1. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.
Origin: Otto Bayer 1937; fridge foam 1950s, Germany. The process chapter follows feedstock → conversion → forming → finish → install. Uses span buildings to defence / safety. Pairings matter: mineral-wool. Circularity mark 32/100. Ask which scrap, which certificate, which year. Related atlas entries, a short glossary, and three threads that keep Polyurethane foam honest.
The coating that sometimes protects foam cores. EN 13501-1 reaction-to-fire letter (A1–F), not a wall rating. Thermal conductivity in W/m·K. Lower means better bulk insulation. Declared performance after blowing-agent or moisture drift. The zone where heat or chemistry changes the datasheet.
The label keeps Polyurethane foam, 1937, and 0. “Otto Bayer” is the condition on the figure. Keep Polyurethane foam with “Otto Bayer” and 0 from 1937. 01937
Figures to keep
- Year of the condition
- 1937
- Property figure
- 0
- Material
- Polyurethane foam
- Use line
- Otto Bayer
PTFE, Plunkett cylinder Tm, 1938Next essayAll 1000 essays1000